git.maemo.org Git - modest/blob - src/modest-tny-msg.c

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <string.h>
  31 #include <gtkhtml/gtkhtml.h>
  32 #include <tny-gtk-text-buffer-stream.h>
  33 #include <tny-simple-list.h>
  34 #include <tny-folder.h>
  35 #include <modest-runtime.h>
  36 #include "modest-formatter.h"
  37 #include <tny-camel-mem-stream.h>
  38 #include <tny-camel-mime-part.h>
  39 #include <glib/gprintf.h>
  40 #include <modest-tny-folder.h>
  41 #include "modest-tny-mime-part.h"
  42 #include <modest-error.h>
  43
  44
  45 #ifdef HAVE_CONFIG_H
  46 #include <config.h>
  47 #endif /*HAVE_CONFIG_H */
  48
  49 #include <modest-tny-msg.h>
  50 #include "modest-text-utils.h"
  51
  52 static TnyMimePart * add_body_part (TnyMsg *msg, const gchar *body,
  53                                     const gchar *content_type);
  54 static TnyMimePart * add_html_body_part (TnyMsg *msg, const gchar *body);
  55 static gint add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err);
  56 static void add_images (TnyMsg *msg, GList *attachments_list, GError **err);
  57 static char * get_content_type(const gchar *s);
  58 static gboolean is_ascii(const gchar *s);
  59
  60
  61 TnyMsg*
  62 modest_tny_msg_new (const gchar* mailto, const gchar* from, const gchar *cc,
  63                     const gchar *bcc, const gchar* subject, const gchar *body,
  64                     GList *attachments, gint *attached, GError **err)
  65 {
  66         TnyMsg *new_msg;
  67         TnyHeader *header;
  68         gchar *content_type;
  69         gint tmp_attached = 0;
  70
  71         /* Create new msg */
  72         new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
  73         header  = tny_msg_get_header (new_msg);
  74
  75         if ((from != NULL) && (strlen(from) > 0)) {
  76                 tny_header_set_from (TNY_HEADER (header), from);
  77                 tny_header_set_replyto (TNY_HEADER (header), from);
  78         }
  79         if ((mailto != NULL) && (strlen(mailto) > 0)) {
  80                 gchar *removed_to = modest_text_utils_remove_duplicate_addresses (mailto);
  81                 tny_header_set_to (TNY_HEADER (header), removed_to);
  82                 g_free (removed_to);
  83         }
  84         if ((cc != NULL) && (strlen(cc) > 0))
  85                 tny_header_set_cc (TNY_HEADER (header), cc);
  86         if ((bcc != NULL) && (strlen(bcc) > 0))
  87                 tny_header_set_bcc (TNY_HEADER (header), bcc);
  88
  89         if ((subject != NULL) && (strlen(subject) > 0))
  90                 tny_header_set_subject (TNY_HEADER (header), subject);
  91
  92         content_type = get_content_type(body);
  93
  94         /* set modest as the X-Mailer
  95          * we could this in the platform factory, but then the header
  96          * would show up before all the others.
  97          */
  98         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
  99                                        VERSION);
 100
 101         /* Add the body of the new mail */
 102         /* This is needed even if body is NULL or empty. */
 103         add_body_part (new_msg, body, content_type);
 104         g_free (content_type);
 105
 106         /* Add attachments */
 107         if (attachments)
 108                 tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 109         if (attached)
 110                 *attached = tmp_attached;
 111         if (header)
 112                 g_object_unref(header);
 113
 114         return new_msg;
 115 }
 116
 117 TnyMsg*
 118 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
 119                                const gchar *bcc, const gchar* subject,
 120                                const gchar *html_body, const gchar *plain_body,
 121                                GList *attachments, GList *images, gint *attached, GError **err)
 122 {
 123         TnyMsg *new_msg;
 124         TnyHeader *header;
 125         gchar *content_type;
 126         gint tmp_attached;
 127
 128         /* Create new msg */
 129         new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
 130         header  = tny_msg_get_header (new_msg);
 131
 132         if ((from != NULL) && (strlen(from) > 0)) {
 133                 tny_header_set_from (TNY_HEADER (header), from);
 134                 tny_header_set_replyto (TNY_HEADER (header), from);
 135         }
 136         if ((mailto != NULL) && (strlen(mailto) > 0))
 137                 tny_header_set_to (TNY_HEADER (header), mailto);
 138         if ((cc != NULL) && (strlen(cc) > 0))
 139                 tny_header_set_cc (TNY_HEADER (header), cc);
 140         if ((bcc != NULL) && (strlen(bcc) > 0))
 141                 tny_header_set_bcc (TNY_HEADER (header), bcc);
 142
 143         if ((subject != NULL) && (strlen(subject) > 0))
 144                 tny_header_set_subject (TNY_HEADER (header), subject);
 145
 146         content_type = get_content_type(plain_body);
 147
 148         /* set modest as the X-Mailer
 149          * we could this in the platform factory, but then the header
 150          * would show up before all the others.
 151          */
 152         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
 153                                        VERSION);
 154
 155         /* Add the body of the new mail */
 156         add_body_part (new_msg, plain_body, content_type);
 157         add_html_body_part (new_msg, html_body);
 158         g_free (content_type);
 159
 160         /* Add attachments */
 161         tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 162         if (attached)
 163                 *attached = tmp_attached;
 164         add_images (new_msg, images, err);
 165         if (header)
 166                 g_object_unref(header);
 167
 168         return new_msg;
 169 }
 170
 171
 172 /* FIXME: this func copy from modest-mail-operation: refactor */
 173 static TnyMimePart *
 174 add_body_part (TnyMsg *msg,
 175                const gchar *body,
 176                const gchar *content_type)
 177 {
 178         TnyMimePart *text_body_part = NULL;
 179         TnyStream *text_body_stream;
 180
 181         /* Create the stream */
 182         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 183                                         (body, (body ? strlen(body) : 0)));
 184
 185         text_body_part = modest_formatter_create_body_part (NULL, msg);
 186
 187         /* Construct MIME part */
 188         tny_stream_reset (text_body_stream);
 189         tny_mime_part_construct (text_body_part,
 190                                  text_body_stream,
 191                                  content_type, "7bit");
 192         tny_stream_reset (text_body_stream);
 193
 194         g_object_unref (G_OBJECT(text_body_part));
 195
 196         /* Clean */
 197         g_object_unref (text_body_stream);
 198
 199         return text_body_part;
 200 }
 201
 202 static TnyMimePart *
 203 add_html_body_part (TnyMsg *msg,
 204                     const gchar *body)
 205 {
 206         TnyMimePart *html_body_part = NULL;
 207         TnyStream *html_body_stream;
 208
 209         /* Create the stream */
 210         html_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 211                                         (body, strlen(body)));
 212
 213         /* Create body part if needed */
 214         html_body_part = modest_formatter_create_body_part (NULL, msg);
 215
 216         /* Construct MIME part */
 217         tny_stream_reset (html_body_stream);
 218         tny_mime_part_construct (html_body_part,
 219                                  html_body_stream,
 220                                  "text/html; charset=utf-8",
 221                                  "7bit"); /* Sometimes it might be needed
 222                                              to make this one a 8bit! */
 223         tny_stream_reset (html_body_stream);
 224
 225         g_object_unref (G_OBJECT(html_body_part));
 226
 227         /* Clean */
 228         g_object_unref (html_body_stream);
 229
 230         return html_body_part;
 231 }
 232
 233 static TnyMimePart *
 234 copy_mime_part (TnyMimePart *part, GError **err)
 235 {
 236         TnyMimePart *result = NULL;
 237         const gchar *attachment_content_type;
 238         const gchar *attachment_filename;
 239         const gchar *attachment_cid;
 240         TnyList *parts;
 241         TnyIterator *iterator;
 242         TnyStream *attachment_stream;
 243         const gchar *enc;
 244         gint ret;
 245
 246         if (TNY_IS_MSG (part)) {
 247                 g_object_ref (part);
 248                 return part;
 249         }
 250
 251         result = tny_platform_factory_new_mime_part (
 252                 modest_runtime_get_platform_factory());
 253
 254         attachment_content_type = tny_mime_part_get_content_type (part);
 255
 256         /* get mime part headers */
 257         attachment_filename = tny_mime_part_get_filename (part);
 258         attachment_cid = tny_mime_part_get_content_id (part);
 259
 260         /* fill the stream */
 261         attachment_stream = tny_mime_part_get_decoded_stream (part);
 262         enc = tny_mime_part_get_transfer_encoding (part);
 263         if (attachment_stream == NULL) {
 264                 if (err != NULL && *err == NULL)
 265                         g_set_error (err, MODEST_MAIL_OPERATION_ERROR, MODEST_MAIL_OPERATION_ERROR_FILE_IO, _("TODO: couldn't retrieve attachment"));
 266                 g_object_unref (result);
 267                 return NULL;
 268         } else {
 269                 ret = tny_stream_reset (attachment_stream);
 270                 ret = tny_mime_part_construct (result,
 271                                                attachment_stream,
 272                                                attachment_content_type,
 273                                                enc);
 274                 ret = tny_stream_reset (attachment_stream);
 275         }
 276
 277         /* set other mime part fields */
 278         tny_mime_part_set_filename (result, attachment_filename);
 279         tny_mime_part_set_content_id (result, attachment_cid);
 280
 281         /* copy subparts */
 282         parts = tny_simple_list_new ();
 283         tny_mime_part_get_parts (part, parts);
 284         iterator = tny_list_create_iterator (parts);
 285         while (!tny_iterator_is_done (iterator)) {
 286                 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
 287                 if (subpart) {
 288                         const gchar *subpart_cid;
 289                         TnyMimePart *subpart_copy = copy_mime_part (subpart, err);
 290                         if (subpart_copy != NULL) {
 291                                 subpart_cid = tny_mime_part_get_content_id (subpart);
 292                                 tny_mime_part_add_part (result, subpart_copy);
 293                                 if (subpart_cid)
 294                                         tny_mime_part_set_content_id (result, subpart_cid);
 295                                 g_object_unref (subpart_copy);
 296                         }
 297                         g_object_unref (subpart);
 298                 }
 299
 300                 tny_iterator_next (iterator);
 301         }
 302         g_object_unref (iterator);
 303         g_object_unref (parts);
 304         g_object_unref (attachment_stream);
 305
 306         return result;
 307 }
 308
 309 static gint
 310 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err)
 311 {
 312         GList *pos;
 313         TnyMimePart *attachment_part, *old_attachment;
 314         gint ret;
 315         gint attached = 0;
 316
 317         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
 318
 319                 old_attachment = pos->data;
 320                 if (!tny_mime_part_is_purged (old_attachment)) {
 321                         const gchar *old_cid;
 322                         old_cid = tny_mime_part_get_content_id (old_attachment);
 323                         attachment_part = copy_mime_part (old_attachment, err);
 324                         if (attachment_part != NULL) {
 325                                 if (add_inline) {
 326                                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 327                                                                        "inline");
 328                                 } else {
 329                                         const gchar *filename;
 330                                         filename = tny_mime_part_get_filename (old_attachment);
 331                                         if (filename)
 332                                                 tny_mime_part_set_filename (attachment_part, filename);
 333                                         else
 334                                                 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 335                                                                                "attachment");
 336                                 }
 337                                 tny_mime_part_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
 338                                 ret = tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 339                                 attached++;
 340                                 if (old_cid)
 341                                         tny_mime_part_set_content_id (attachment_part, old_cid);
 342                                 g_object_unref (attachment_part);
 343                         }
 344                 }
 345         }
 346         return attached;
 347 }
 348
 349 static void
 350 add_images (TnyMsg *msg, GList *images_list, GError **err)
 351 {
 352         TnyMimePart *related_part = NULL;
 353         const gchar *content_type;
 354
 355         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 356
 357         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 358                 related_part = g_object_ref (msg);
 359         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 360                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 361                 TnyIterator *iter = NULL;
 362                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 363                 iter = tny_list_create_iterator (parts);
 364
 365                 while (!tny_iterator_is_done (iter)) {
 366                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 367                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 368                                 related_part = part;
 369                                 break;
 370                         } else {
 371                                 g_object_unref (part);
 372                         }
 373                         tny_iterator_next (iter);
 374                 }
 375                 g_object_unref (iter);
 376                 g_object_unref (parts);
 377         }
 378
 379         if (related_part != NULL) {
 380                 /* TODO: attach images in their proper place */
 381                 add_attachments (related_part, images_list, TRUE, err);
 382                 g_object_unref (related_part);
 383         }
 384 }
 385
 386
 387 gchar *
 388 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 389 {
 390         TnyStream *stream;
 391         TnyMimePart *body;
 392         GtkTextBuffer *buf;
 393         GtkTextIter start, end;
 394         gchar *to_quote;
 395         gboolean result_was_html = TRUE;
 396
 397         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 398
 399         body = modest_tny_msg_find_body_part(msg, want_html);
 400         if (!body)
 401                 return NULL;
 402
 403         buf = gtk_text_buffer_new (NULL);
 404         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 405         tny_stream_reset (stream);
 406         tny_mime_part_decode_to_stream (body, stream, NULL);
 407         tny_stream_reset (stream);
 408
 409         gtk_text_buffer_get_bounds (buf, &start, &end);
 410         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 411         if (tny_mime_part_content_type_is (body, "text/plain")) {
 412                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 413                 g_free (to_quote);
 414                 to_quote = to_quote_converted;
 415                 result_was_html = FALSE;
 416         }
 417
 418         g_object_unref (buf);
 419         g_object_unref (G_OBJECT(stream));
 420         g_object_unref (G_OBJECT(body));
 421
 422         if (is_html != NULL)
 423                 *is_html = result_was_html;
 424
 425         return to_quote;
 426 }
 427
 428
 429 TnyMimePart*
 430 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 431 {
 432         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 433         TnyMimePart *part = NULL;
 434         TnyList *parts = NULL;
 435         TnyIterator *iter = NULL;
 436         gchar *header_content_type;
 437         gchar *header_content_type_lower = NULL;
 438
 439         if (!msg)
 440                 return NULL;
 441
 442         /* If it's an application multipart, then we don't get into as we don't
 443          * support them (for example application/sml or wap messages */
 444         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
 445         if (header_content_type) {
 446                 header_content_type = g_strstrip (header_content_type);
 447                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 448         }
 449         if (header_content_type_lower &&
 450             g_str_has_prefix (header_content_type_lower, "multipart/") &&
 451             !g_str_has_prefix (header_content_type_lower, "multipart/signed") &&
 452             strstr (header_content_type_lower, "application/")) {
 453                 g_free (header_content_type_lower);
 454                 g_free (header_content_type);
 455                 return NULL;
 456         }
 457         g_free (header_content_type_lower);
 458         g_free (header_content_type);
 459
 460         parts = TNY_LIST (tny_simple_list_new());
 461         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 462
 463         iter  = tny_list_create_iterator(parts);
 464
 465         /* no parts? assume it's single-part message */
 466         if (tny_iterator_is_done(iter)) {
 467                 gchar *content_type;
 468                 gboolean is_text_part;
 469                 g_object_unref (G_OBJECT(iter));
 470                 content_type = modest_tny_mime_part_get_content_type (msg);
 471                 if (content_type == NULL)
 472                         return NULL;
 473                 is_text_part =
 474                         g_str_has_prefix (content_type, "text/");
 475                 g_free (content_type);
 476                 /* if this part cannot be a supported body return NULL */
 477                 if (!is_text_part) {
 478                         return NULL;
 479                 } else {
 480                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 481                 }
 482         } else {
 483                 do {
 484                         gchar *tmp, *content_type = NULL;
 485                         gboolean has_content_disp_name = FALSE;
 486
 487                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 488
 489                         if (!part) {
 490                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 491                                 tny_iterator_next (iter);
 492                                 continue;
 493                         }
 494
 495                         /* it's a message --> ignore */
 496                         if (part && TNY_IS_MSG (part)) {
 497                                 g_object_unref (part);
 498                                 part = NULL;
 499                                 tny_iterator_next (iter);
 500                                 continue;
 501                         }
 502
 503                         /* we need to strdown the content type, because
 504                          * tny_mime_part_has_content_type does not do it...
 505                          */
 506                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 507
 508                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
 509                          * and a 'name=' thingy cannot be body parts
 510                          */
 511
 512                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
 513                         if (tmp) {
 514                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
 515                                 g_free (tmp);
 516                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
 517                                 g_free (content_disp);
 518                         }
 519
 520                         if (g_str_has_prefix (content_type, desired_mime_type) &&
 521                             !has_content_disp_name &&
 522                             !modest_tny_mime_part_is_attachment_for_modest (part)) {
 523                                 /* we found the desired mime-type! */
 524                                 g_free (content_type);
 525                                 break;
 526
 527                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 528
 529                                 /* multipart? recurse! */
 530                                 g_object_unref (part);
 531                                 g_free (content_type);
 532                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 533                                 if (part)
 534                                         break;
 535                         } else
 536                                 g_free (content_type);
 537
 538                         if (part) {
 539                                 g_object_unref (G_OBJECT(part));
 540                                 part = NULL;
 541                         }
 542
 543                         tny_iterator_next (iter);
 544
 545                 } while (!tny_iterator_is_done(iter));
 546         }
 547
 548         g_object_unref (G_OBJECT(iter));
 549         g_object_unref (G_OBJECT(parts));
 550
 551         /* if were trying to find an HTML part and couldn't find it,
 552          * try to find a text/plain part instead
 553          */
 554         if (!part && want_html)
 555                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 556         else
 557                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 558                               * part */
 559 }
 560
 561
 562 TnyMimePart*
 563 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 564 {
 565         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 566
 567         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 568                                                              want_html);
 569 }
 570
 571
 572 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 573
 574 static TnyMsg *
 575 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 576                            const gchar *signature, gboolean is_reply,
 577                            guint type /*ignored*/, GList *attachments)
 578 {
 579         TnyMsg *new_msg;
 580         TnyHeader *new_header;
 581         gchar *old_subject;
 582         gchar *new_subject;
 583         TnyMimePart *body = NULL;
 584         ModestFormatter *formatter;
 585         gchar *subject_prefix;
 586         gboolean no_text_part;
 587
 588         if (header)
 589                 g_object_ref (header);
 590         else
 591                 header = tny_msg_get_header (msg);
 592
 593         /* Get body from original msg. Always look for the text/plain
 594            part of the message to create the reply/forwarded mail */
 595         if (msg != NULL)
 596                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 597
 598         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 599                                   NULL))
 600                 formatter = modest_formatter_new ("text/html", signature);
 601         else
 602                 formatter = modest_formatter_new ("text/plain", signature);
 603
 604
 605         /* if we don't have a text-part */
 606         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 607
 608         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 609         if (is_reply)
 610                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 611                                                     attachments);
 612         else {
 613                 /* for attachements; inline if there is a text part, and include the
 614                  * full old mail if there was none */
 615                 if (no_text_part) {
 616                         new_msg = modest_formatter_attach (formatter, msg, header);
 617                 } else {
 618                         new_msg = modest_formatter_inline  (formatter, body, header,
 619                                                             attachments);
 620                 }
 621         }
 622
 623         g_object_unref (G_OBJECT(formatter));
 624         if (body)
 625                 g_object_unref (G_OBJECT(body));
 626
 627         /* Fill the header */
 628         new_header = tny_msg_get_header (new_msg);
 629         tny_header_set_from (new_header, from);
 630         tny_header_set_replyto (new_header, from);
 631
 632         /* Change the subject */
 633         if (is_reply)
 634                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 635         else
 636                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 637         old_subject = tny_header_dup_subject (header);
 638         new_subject =
 639                 (gchar *) modest_text_utils_derived_subject (old_subject,
 640                                                              subject_prefix);
 641         g_free (old_subject);
 642         g_free (subject_prefix);
 643         tny_header_set_subject (new_header, (const gchar *) new_subject);
 644         g_free (new_subject);
 645
 646         /* get the parent uid, and set it as a gobject property on the new msg */
 647         if (new_msg) {
 648                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
 649                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 650                                         parent_uid, g_free);
 651         }
 652
 653         /* set modest as the X-Mailer
 654          * we could this in the platform factory, but then the header
 655          * would show up before all the others.
 656          */
 657         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 658                                        VERSION);
 659
 660         /* Clean */
 661         g_object_unref (G_OBJECT (new_header));
 662         g_object_unref (G_OBJECT (header));
 663         /* ugly to unref it here instead of in the calling func */
 664
 665         if (!is_reply & !no_text_part) {
 666                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, NULL);
 667         }
 668
 669         return new_msg;
 670 }
 671
 672 const gchar*
 673 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 674 {
 675         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 676
 677         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 678 }
 679
 680
 681
 682 static void
 683 add_if_attachment (gpointer data, gpointer user_data)
 684 {
 685         TnyMimePart *part;
 686         GList **attachments_list;
 687
 688         part = TNY_MIME_PART (data);
 689         attachments_list = ((GList **) user_data);
 690
 691         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 692                 *attachments_list = g_list_prepend (*attachments_list, part);
 693                 g_object_ref (part);
 694         }
 695 }
 696
 697 TnyMsg*
 698 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 699                                    const gchar *from,
 700                                    const gchar *signature,
 701                                    ModestTnyMsgForwardType forward_type)
 702 {
 703         TnyMsg *new_msg;
 704         TnyList *parts = NULL;
 705         GList *attachments_list = NULL;
 706
 707         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 708
 709         /* Add attachments */
 710         parts = TNY_LIST (tny_simple_list_new());
 711         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 712         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 713
 714         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 715                                              attachments_list);
 716
 717         /* Clean */
 718         if (attachments_list) {
 719                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 720                 g_list_free (attachments_list);
 721         }
 722         g_object_unref (G_OBJECT (parts));
 723
 724         return new_msg;
 725 }
 726
 727
 728
 729 static gint
 730 count_addresses (const gchar* addresses)
 731 {
 732         gint count = 1;
 733
 734         if (!addresses)
 735                 return 0;
 736
 737         while (*addresses) {
 738                 if (*addresses == ',' || *addresses == ';')
 739                         ++count;
 740                 ++addresses;
 741         }
 742
 743         return count;
 744 }
 745
 746
 747 /* get the new To:, based on the old header,
 748  * result is newly allocated or NULL in case of error
 749  * */
 750 static gchar*
 751 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 752             ModestTnyMsgReplyMode reply_mode)
 753 {
 754         gchar* old_reply_to;
 755         gchar* old_from;
 756         gchar* new_to;
 757
 758         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 759          * can identify Mailing-List posts by the List-Help header.
 760          * for mailing lists, both the Reply-To: and From: should be included
 761          * in the new To:; for now, we're ignoring List-Post
 762          */
 763         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 764                                                                   "List-Help");
 765         gboolean is_mailing_list = (list_help != NULL);
 766         g_free (list_help);
 767
 768
 769         /* reply to sender, use ReplyTo or From */
 770         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 771                                                               "Reply-To");
 772         old_from     = tny_header_dup_from (header);
 773
 774         if (!old_from && !old_reply_to) {
 775                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 776                            __FUNCTION__);
 777                 return NULL;
 778         }
 779
 780         /* for mailing lists, use both Reply-To and From if we did a
 781          * 'Reply All:'
 782          * */
 783         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 784             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 785                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 786         else
 787                 /* otherwise use either Reply-To: (preferred) or From: */
 788                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 789         g_free (old_from);
 790         g_free (old_reply_to);
 791
 792         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 793         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 794                 gchar *old_to = tny_header_dup_to (header);
 795                 if (!old_to)
 796                         g_warning ("%s: no To: address found in source mail",
 797                                    __FUNCTION__);
 798                 else {
 799                         /* append the old To: */
 800                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 801                         g_free (new_to);
 802                         new_to = tmp;
 803                         g_free (old_to);
 804                 }
 805
 806                 /* remove duplicate entries */
 807                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 808                 g_free (new_to);
 809                 new_to = tmp;
 810
 811                 /* now, strip me (the new From:) from the new_to, but only if
 812                  * there are >1 addresses there */
 813                 if (count_addresses (new_to) > 1) {
 814                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 815                         g_free (new_to);
 816                         new_to = tmp;
 817                 }
 818         }
 819
 820         return new_to;
 821 }
 822
 823
 824 /* get the new Cc:, based on the old header,
 825  * result is newly allocated or NULL in case of error */
 826 static gchar*
 827 get_new_cc (TnyHeader *header, const gchar* from)
 828 {
 829         gchar *old_cc, *result, *dup;
 830
 831         old_cc = tny_header_dup_cc (header);
 832         if (!old_cc)
 833                 return NULL;
 834
 835         /* remove me (the new From:) from the Cc: list */
 836         dup =  modest_text_utils_remove_address (old_cc, from);
 837         result = modest_text_utils_remove_duplicate_addresses (dup);
 838         g_free (dup);
 839         g_free (old_cc);
 840         return result;
 841 }
 842
 843
 844 TnyMsg*
 845 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 846                                  TnyHeader *header,
 847                                  const gchar *from,
 848                                  const gchar *signature,
 849                                  ModestTnyMsgReplyType reply_type,
 850                                  ModestTnyMsgReplyMode reply_mode)
 851 {
 852         TnyMsg *new_msg = NULL;
 853         TnyHeader *new_header;
 854         gchar *new_to = NULL;
 855         TnyList *parts = NULL;
 856         GList *attachments_list = NULL;
 857
 858         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 859
 860         parts = TNY_LIST (tny_simple_list_new());
 861         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 862         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 863
 864         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 865                                              attachments_list);
 866         if (attachments_list != NULL) {
 867                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 868                 g_list_free (attachments_list);
 869         }
 870         if (parts)
 871                 g_object_unref (G_OBJECT (parts));
 872
 873         /* Fill the header */
 874         if (header)
 875                 g_object_ref (header);
 876         else
 877                 header = tny_msg_get_header (msg);
 878
 879
 880         new_header = tny_msg_get_header(new_msg);
 881         new_to = get_new_to (msg, header, from, reply_mode);
 882         if (!new_to)
 883                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 884         else {
 885                 tny_header_set_to (new_header, new_to);
 886                 g_free (new_to);
 887         }
 888
 889         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 890                 gchar *new_cc = get_new_cc (header, from);
 891                 if (new_cc) {
 892                         tny_header_set_cc (new_header, new_cc);
 893                         g_free (new_cc);
 894                 }
 895         }
 896
 897         /* Clean */
 898         g_object_unref (G_OBJECT (new_header));
 899         g_object_unref (G_OBJECT (header));
 900
 901         return new_msg;
 902 }
 903
 904
 905 static gboolean
 906 is_ascii(const gchar *s)
 907 {
 908         if (!s)
 909                 return TRUE;
 910         while (s[0]) {
 911                 if (s[0] & 128 || s[0] < 32)
 912                         return FALSE;
 913                 s++;
 914         }
 915         return TRUE;
 916 }
 917
 918 static char *
 919 get_content_type(const gchar *s)
 920 {
 921         GString *type;
 922
 923         type = g_string_new("text/plain");
 924         if (!is_ascii(s)) {
 925                 if (g_utf8_validate(s, -1, NULL)) {
 926                         g_string_append(type, "; charset=\"utf-8\"");
 927                 } else {
 928                         /* it should be impossible to reach this, but better safe than sorry */
 929                         g_warning("invalid utf8 in message");
 930                         g_string_append(type, "; charset=\"latin1\"");
 931                 }
 932         }
 933         return g_string_free(type, FALSE);
 934 }
 935
 936 guint64
 937 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
 938                               guint64 parts_count,
 939                               guint64 parts_size)
 940 {
 941         guint64 result;
 942
 943         /* estimation of headers size */
 944         result = 1024;
 945
 946         /* We add a 20% of size due to the increase in 7bit encoding */
 947         if (plain_body) {
 948                 result += strlen (plain_body) * 120 / 100;
 949         }
 950         if (html_body) {
 951                 result += strlen (html_body) * 120 / 100;
 952         }
 953
 954         /* 256 bytes per additional part because of their headers */
 955         result += parts_count * 256;
 956
 957         /* 150% of increase per encoding */
 958         result += parts_size * 3 / 2;
 959
 960         return result;
 961 }
 962
 963 GSList *
 964 modest_tny_msg_header_get_all_recipients_list (TnyHeader *header)
 965 {
 966         GSList *recipients = NULL;
 967         gchar *from = NULL, *to = NULL, *cc = NULL, *bcc = NULL;
 968
 969         if (header == NULL)
 970                 return NULL;
 971
 972         from = tny_header_dup_from (header);
 973         to = tny_header_dup_to (header);
 974         cc = tny_header_dup_cc (header);
 975         bcc = tny_header_dup_bcc (header);
 976
 977         recipients = NULL;
 978         if (from)
 979                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (from));
 980         if (to)
 981                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (to));
 982         if (cc)
 983                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (cc));
 984         if (bcc)
 985                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (bcc));
 986
 987         g_free (from);
 988         g_free (to);
 989         g_free (cc);
 990         g_free (bcc);
 991
 992         return recipients;
 993 }
 994
 995 GSList *
 996 modest_tny_msg_get_all_recipients_list (TnyMsg *msg)
 997 {
 998         TnyHeader *header = NULL;
 999         GSList *recipients = NULL;
1000
1001         if (msg == NULL)
1002                 return NULL;
1003
1004         header = tny_msg_get_header (msg);
1005         if (header == NULL)
1006                 return NULL;
1007
1008         recipients = modest_tny_msg_header_get_all_recipients_list (header);
1009         g_object_unref (header);
1010
1011         return recipients;
1012 }
1013